Improvement in stopping-mechanism for machine for doubling yarn



Vgreatly to be desired., L g

. Devices for. this purpose have heretofore been." ap- N, y dimitri-tant @tutti il H V1s-AAC,Wrenanni;orraovrnnncn, RHODE ISLAND.l

` i Margraten lv.`89,s54, naad May 11,1869.

wir,

riv'rpnovnw'rnn'r IrrsTorirNGl-MECANISM ron MACHINE FOR DQBLING Yann.

Thevsvfcheclule referred to in these Letters Patent and making part of the same.

and county of Providence, in the State of Rhode Island,

have invented a new andus'eful Improvement lin, Stop- Motion for Machine for=Donbling Yarn 5 andI do hereby declare that the following specification, taken. in

connection with the drawings making a part Vof thesame, `is a full, clear, and exact description thereof.

Figure 1- is partially an end view and partially a transverse and` vertical section.

Figure 2 is a front;view of oneof the spools, a portion ofthe spindle-rail, and the plate for unseating the spool. i

e Figure 3 is a view ofthe means for latching downl `the plate forunseating the spool.

. `A` doubler is a well-known machine in use among manufacturers of fibrous material. `The oyice which it `performs is that of laying together in one thread two or Imore strands of line yarns, which have severally previously been spun `and wound upon cops o'r bobhinsf` The several strands to. compose the thread may, as in. the threadfmanufactnre, be of the same material, or, as in the cassimere-manufacture, they may be of `different materials, as silkl and worsted. The colors,

too, are often dilferenaas found in silk, poplin, andother manufactures.`

'e Inasmchas it is importantftha't the thread should be` of uniform size, by containing throughout its entire length the same number of strands, and as each lstrand, fromits' extreme neuess possesses a small amount of strength and is readily broken, lit is obvious that some means forarrestig the doubling-process, upon the instant that a breakin ja single strand occurs, is

p lied to machines of` this class, but noone of them, with which I am acquainted,'possesses. the sensitive# ness, or the principle of operation which Vcharacterize the improvement hereindesc'ribed.'

A represents one end of the usual rectangular framework of `a machine of `this kind.- i

'B arethe` spindles, (of which there is` the usual number,) suitablystepped and bolstered. Bands passing around-thedrurn `and winding about the pulleys a a upon the spindles, give motionto the latter, while thread-guides b, projecting Vfrom at'raverserail, which is suitably guided by rods D,are `made to traverse the spools E, by means ofthe lever F, and heart-cam mo- 4 tion A(rhalloperating inthe way .well understood among builders of this class of machinery.

it will be necessary topoint out the apparatus by which, inY case any strand chances to break, the spool upon which such strand, withV its fellows, composing thev thread, is to be wound, shallcease to revolve. c

Each spooLE fits loosely upon its spindle B, yand is revolved with the spindle entirely by the friction of its' lower head against the surface of a dange, or disk-plate,

d, attached to the spindle B,l and which ange forms af support for the spool. i In practice, this friction will be found quite suficient, but a pin projecting from such an'gc, and en tering a recess in the lower head of the spool, may be added to insure that result if preferred. a

Underneath the lower head of Aeach spool, is an annular plate, e, forwhich anyequivalent device maybe used, the ofrce of which is, bythe means hereinafter described, to'y upward upon the breaking of a strand of yarn, and its central opening beingx greater 'in diameter, than the flange d, lifts the spool E clear of such ange, from which, as before said, the spool derives motion. a

Appropriate to each spool,and conveniently located in reference thereto, as, for instance, by being placed upright in a longitudinal rail, J, running the length of the machine, (see iigs. 2 and 3,) is a barrel, or tube,y f, which contains a rod, around wh'ich is coiled a spring, so arranged within the barrel, that when such Vrod is pushed downward, the `co`ils of the spring will be com pressed. 1 Y.

The upper end of this rod is connected Withthe annular plate e, before mentioned. I, l A finger-piece, g, for operating such rod, projects.

from the same, near the neck by which the rod joins that, upon the rod being pushed downfar enoughk to allowit, such latch will catch hold of the botto'm l edge of the tube, and retain the rod in that position against the' upward pressure of the coiled spring which surrounds the rod before mentioned.

The particular Way of enabling the-rod to latch itself .in a certain position, is not material. Other arrangei ments will readily suggest themselves, as, for instance,

the lower extremity df the rod itself may be made into a spring with a catch upon its end. i Referring now to the yarn,.the course'of which has not been traced beyond the felttension beam I, it is to be understood that each strand is to be conducted over a pulley, K, or equivalent smooth surface, and from thence over the supporting beam L,'when the desired number of strands isv led together through the traversing guide-eye b, formingathreadto be wound upon the spool. Let it be supposed now that each thread'isto be composed of three strands of yarn; then should there i be three pulleys K, or equivalent eyes, each one bear ing against its proper strand of yarn, as in the one instance shown in the drawing.

A description of the oice which any one of these pulleys K, and the apparatus of which it is a part, performs in the combination in the hereinbefore-described mechanism for disconnecting the spool from its source of motion, will be the same for all.

The pulley K, or its equivalent smooth surface, over which the thread is to pass, forms the end of a short lever, M, whose fulcrum is at h. f

This lever has ashort arm, t', slightly bent or curved inward. When the machine is working properly, the arm should stand nearly at the perpendicular, but its centre of gravity is nevertheless, by reason ,of the weighted arm N, out of the perpendicular, and causes a slight tension to be ,brought upon the yarn, and without the support of the yarn, the lever would fall to the side upon which the weight N is placed.

Each of these weighted tension-levers is mounted upon a bar, O, runninglengthwise of the machine, and

they are arranged in sets of'three, 'or any other number appropriate to each spool.

vUnderneath the longitudinal bar 0, and for each spool, is a thin plate, k, tted to slide for a short distance.

It has three slots cut in it, corresponding with the number of short arms i.

These arms occupy three slots, but do not fill them from front to rear, there being left a clear space of one-sixteenth of an inch, more or less, between the back edge of' the arm t' and the end of the. slot.

ThisA clear space is graduated by the'distance which the weighted arm N will pass through in falling, it being designed that just before the end of such arm brings up upon the face of the bar O, the back edge of the arm i shall strike, by the impetus which it has acquired, a smart blow upon the end of the slot in the plate Ic, and consequently slide the latter with a sudden jerk.

The plate 7c, so capable 'of being operated by any one of its set of weighted tension-levers, isconnected with its properlatch, hereinbefore described es attached to the end of the spring-rodV within' the tube f, by means of a wire link, l?, so that the fall of a weighted tension-lever, in consequence of the breaking of its supporting-yarn, will, of necessity, trip the latch which holds down such rod, and allow the coiled spring within the tubef to throw up the annular plate e, and disconnect the spool E, upon which such strand oi" yarn, if it had not broken, would have been, with its fellows, wound from the anged upon the spindle from which suoli spool derives its motion.

It`will be observed that the characteristic feature which distinguishes my apparatus for this purpose, is that although when the machine is in operation, avery inconsiderable strain is brought upon the yarn by the weighted tension-levers M, yet upon the breaking of the yarn, the principle of accelerated force acquired by a fallingbody in free space, may be made available to increase the power which the short armil of the lever is required to exert to ei'eot a, trip; and furthermore,it will be noticed that the spool being so disconnected from its source of motion, is instantly brought to a state of rest, the unbroken yarns acting as dragweights for this purpose.

After the broken end is mended, all that is required to put the spool which ,has been stopped again into motion, is to depress the iing'er-piece g.

What I claim as my invention, and desire to secure by Letters Patent, is-

The combination of the weighted tension-lever M, the link-connection k P, and the spool-unseating springplate c, or the equivalents thereof, substautiallyas described, the apparatus operating, upon the fall of such lever M, to disconnect the spool E from i-ts source of `inotion, as herein set forth.

Also, the combination, with a spool, E, seated upon a flange, d, upon the spindle of a spring-plate, e, or equivalent device for unseating the spool, substantially as described. y

ISAAC W. CLARKE. kWitnesses:

EDWIN A. HALL, ORvILLE PECKHAM. 

